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jarptica [38.1K]
3 years ago
13

If x2+y2=40 and xy=5 then find(x+y)2

Mathematics
1 answer:
VMariaS [17]3 years ago
8 0

Answer:

(x + y)^2 = 45

Step-by-step explanation:

(x + y)^{2} = x^{2}  +xy + y^{2}

             = 40 + 5 = 45

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Tom drank 1 1/4 quarts of water and his sister drank 1.75 who drank the most water
Genrish500 [490]

Answer:

his sister bc 1.75 is 1 3/4

Step-by-step explanation:

4 0
3 years ago
Find the annual interest rate. Round your answer to the nearest hundredth of a percent. I=$160.67, P=$2000, t=8 monthsI=$160.67,
Keith_Richards [23]

Answer:

The annual interest rate is 12.05%.

Step-by-step explanation:

The simple interest is given by the formula:

I=\dfrac{P\times R\times T}{100}

Where I denotes interest.

P denotes the principal amount.

R denotes the rate of interest

and T denotes the time period.

I=$160.67, P=$2000, t=8 months=8/12 years (Since 12 months=1 year so 1 month=1/12 year)

160.67=\dfrac{2000\times R \times \dfrac{8}{12}}{100}\\\\R=12.05%

Hence, the annual interest rate is 12.05%.

5 0
3 years ago
Read 2 more answers
Can someone please answer this for me
kifflom [539]

Answer:

x = 7.5

y = 75

Step-by-step explanation:

if one angle of an equilateral triangle is 60 degrees (180/3) then 4x + 2x + 2x = 8x = 60, so x = 7.5

for y, we'll have to take the right triangle. we know that 2x = 15, and MON = 60, so 180 - 60 - 15 = 105.

180 - 105 will give us y, which is 75

3 0
3 years ago
Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, fin
BabaBlast [244]

Complete question is;

Multiple-choice questions each have 5 possible answers, one of which is correct. Assume that you guess the answers to 5 such questions.

Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, find P(WWWWC), where C denotes a correct answer and W denotes a wrong answer.

P(WWWWC) =

Answer:

P(WWWWC) = 0.0819

Step-by-step explanation:

We are told that each question has 5 possible answers and only 1 is correct. Thus, the probability of getting the right answer in any question is =

(number of correct choices)/(total number of choices) = 1/5

Meanwhile,since only 1 of the possible answers is correct, then there will be 4 incorrect answers. Thus, the probability of choosing the wrong answer would be;

(number of incorrect choices)/(total number of choices) = 4/5

Now, we want to find the probability of getting the 1st 4 guesses wrong and the 5th one correct. To do this we will simply multiply the probabilities of each individual event by each other.

Thus;

P(WWWWC) = (4/5) × (4/5) × (4/5) × (4/5) × (1/5) = 256/3125 ≈ 0.0819

P(WWWWC) = 0.0819

4 0
3 years ago
Use the information provided to find the length of the minor axis
SVETLANKA909090 [29]

Answer:

Is there a picture or any information which I can use to help you?

<em>-shonenly :)</em>

Step-by-step explanation:

6 0
3 years ago
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